Motor oils

Motor Oil Motor oil is an oil used for lubrication of various internal combustion engines. The main function is to lubricate moving parts; it also cleans, inhibits corrosion, improves sealing, and cools the engine by carrying heat away from moving parts

Synthetic vs. Conventional

What is Viscosity Viscosity is a measure of the resistance of a fluid which is being deformed by either shear or tensile stress. Basically, this is how thick or thin a fluid is determined to be

How do you measure it A viscometer is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure under one flow condition.

How does this apply to me All machinery containing moving parts have some type of lubricant Lubricant is any substance used to reduce friction among moving parts Examples Engine oil Transmission fluid Gear oil

How do I know what to use 10w-40? 5w-20? SAE 30? Operators manuals list specifications for each piece of machinery where a car truck or lawnmower

What do the numbers mean W on a viscosity rating it means that this oil viscosity has been tested at a Colder temperature The first number on an oil can is the cold tested viscosity The second number is the running temperature viscosity